A two-level overlapping Schwarz preconditioner for discontinuous Galerkin methods
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| Autores: | , |
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| Formato: | artículo original |
| Estado: | Versión publicada |
| Data de Publicación: | 2025 |
| Descripción: | This article introduces a two-level overlapping additive Schwarz algorithm tailored for solving elliptic problems discretized with the symmetric interior penalty discontinuous Galerkin method. The proposed algorithm allows for the use of irregular subdomains, overcoming limitations of other approaches where the coarse mesh was based on triangular elements. Additionally, we provide a brief description of the numerical implementation of the Galerkin method. We present numerical results validating the relevance of our algorithm, including cases where the coefficient of the differential equation is discontinuous—a feature that is particularly relevant to various practical applications. |
| País: | Portal de Revistas UCR |
| Institución: | Universidad de Costa Rica |
| Repositorio: | Portal de Revistas UCR |
| Idioma: | Inglés |
| OAI Identifier: | oai:portal.ucr.ac.cr:article/59472 |
| Acceso en liña: | https://revistas.ucr.ac.cr/index.php/matematica/article/view/59472 |
| Palabra crave: | Descomposición de dominios Métodos discontinuos de Galerkin Subdominios con frontera irregular Algoritmos con traslape de Schwarz Problemas elípticos nodales Domain decomposition Discontinuous Galerkin methods Irregular subdomain boundaries Overlapping Schwarz algorithms Nodal elliptic problems |